| 基于非均衡系数小波变换的插值算法研究 |
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| 引用本文： | 浦利,刘玉树,金伟其.基于非均衡系数小波变换的插值算法研究[J].南京理工大学学报(自然科学版),2007,31(3):323-326. |
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| 作者姓名： | 浦利 刘玉树 金伟其 |
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| 作者单位： | 1. 北京理工大学计算机科学技术学院,北京,100081
2. 北京理工大学信息科学技术学院,北京,100081 |
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| 摘 要： | 为了在不改变系统硬件的条件下获得高分辨率的图像,对双线性等传统插值方法和小波插值方法进行了分析,提出基于非均衡系数匹配的小波插值算法,通过对小波插值的各个高频子图进行降幅,并配合不同的幅度系数,获得了高分辨率插值图像.试验结果证明:这种方法运算量小、计算速度快、能提高插值复原图像的效果,应用于热图像同样有效.试验中峰值信噪比相对于双线性插值法提高0.5 dB以上.
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| 关 键 词： | 图像复原 超分辨率 小波插值 双线性插值 均衡系数 小波变换 双线性插值法 算法研究 Coefficient Based Interpolation Algorithm 峰值信噪比 热图像 应用 效果 复原 计算速度 运算量小 插值方法 结果 试验 配合 小波插值 插值算法 |
| 文章编号： | 1005-9830（2007）03-0323-04 |
| 修稿时间： | 2006-10-192007-04-10 |
Wavelet Interpolation Algorithm Based on Unbalanced Coefficient |
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| PU Li,LIU Yu-shu,JIN Wei-qi.Wavelet Interpolation Algorithm Based on Unbalanced Coefficient[J].Journal of Nanjing University of Science and Technology(Nature Science),2007,31(3):323-326. |
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| Authors: | PU Li LIU Yu-shu JIN Wei-qi |
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| Institution: | 1. School of Computer Science and Technology ; 2. School of Information Science and Technology, Beijing Institute of Technology, Beijing 100081 ,China |
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| Abstract: | To acquire image with higher resolution without changing the hardware, bilinear interpolation and wavelet interpolation algorithm is analyzed. A new unbalanced coefficient wavelet interpolation algorithm is proposed. The amplitude of different high frequency channels of wavelet is reduced and applied with different limit coefficients, and better interpolation images with high resolu- tion are obtained, The experiments prove this algorithm can improve the capability of getting higher resolution image and it is also an effective algorithm for infrared image, In experiment the PSNR is improved by 0.5 dB compared with the bilinear interpolation algorithm. This algorithm is of lower calculation complexity and high calculation speed. |
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| Keywords: | image restoration super-resolution wavelet interpolation bilinear interpolation |
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